Class Central

Rankings
Career Certificates

Subjects

View all

Technology
Business
Creative
STEM
Health & Wellness
People & Society
Personal Growth & Lifestyle

View all Subjects

Universities
The Report

Courses from 1000+ universities

Rankings

Best Courses

Best of All Time
Best of the Year

Most Popular Courses

Most Popular of All Time
Most Popular of the Year

Career Certificates

Generative AI
UX Design
Data Science
Finance
DevOps
Project Management
View all Career Certificates

Technology

Computer Science
Artificial Intelligence
Data Science
Web Development
Programming
Databases
IT & Networking
DevOps
UX/UI Design
Blockchain & Cryptocurrency
Extended Reality (XR)
Generative AI
Cloud Computing
Cybersecurity
Game Development
Product Management
View all Technology

Business

Management & Leadership
Finance
Entrepreneurship
Marketing
Strategic Management
Project Management
Sales
Business Software
Real Estate
Operations Management
Professional Development
Accounting
Supply Chain Management
Human Resources
View all Business

Creative

Music
Digital Media
Visual Arts
Design
Crafts
Performing Arts
AI Art
View all Creative

STEM

Mathematics
Engineering
Science
Statistics & Probability
Chemistry
Physics
Environmental Science
Astronomy
Biology
Agriculture
View all STEM

Health & Wellness

Disease & Disorders
Public Health
Health Care
Nursing
Mental Health
Continuing Medical Education (CME)
Medicine
Wellness
Nutrition
View all Health & Wellness

People & Society

Humanities
Education & Teaching
Social Sciences
History
Literature
Sociology
Economics
Psychology
Anthropology
Political Science
Law
Language Learning
Writing
Philosophy
Religion
View all People & Society

Personal Growth & Lifestyle

Personal Development
Sports & Recreation
Personal Finance
Parenting & Family
Food & Drink
Self-Defense
Gardening
Productivity
Games
Study Skills
Travel
Pets & Pet Care
Beauty & Makeup
Home & Living
Critical Thinking
View all Personal Growth & Lifestyle

Chasing 100M Daily Users, Duolingo Reconsiders Ads, Paying Influencers, and Its Most Expensive Plan

AI got cheap enough that Duolingo’s most expensive plan may not survive it. I read the earnings call transcript and opened the app to see what is actually changing for learners.

Dhawal Shah Sep 03, 2026

Latest

10 Best Python Courses for 2026: For AI and Data
11 Best Product Management Courses for 2026: Certificates and AI Skills
14 Best AI Courses for 2026: For Beginners & Coders
Guide: How to Sign up for Coursera Courses for Free
[2026] 8000+ OpenCourseWare Courses from Top Institutions

Write for The Report

Visit The Report

600 Free Google Certifications
Trending

Most common

Popular subjects

Strategic Management
2,816 courses
AI Engineering
1,503 courses
Generative AI
11,179 courses

Popular courses

Exploratory Data Analysis with MATLAB
MathWorks
Introduction to Frisian
University of Groningen
Greek and Roman Mythology
University of Pennsylvania

Organize and share your learning with Class Central Lists.

View our Lists Showcase

Sign up

Log in or Sign up

Log in
Sign up

Languages
Chinese

Free Online

Chinese Courses

13,923 courses

Showing 13,923 courses

Sort by Relevancy

Filter by

Filters

1. Free course (12,698)
2. With certificate (1,774)
3. Career certificates (10)
4. From universities (7,314)
Level
1. Beginner (6,827)
2. Intermediate (5,710)
3. Advanced (1,384)
Duration
1. < 30 mins (58)
2. 30 - 60 mins (138)
3. 1 - 2 hours (675)
4. 2 - 5 hours (348)
5. 5 - 10 hours (160)
6. 10+ hours (369)
Subject
1. STEM (3,618)
2. People & Society (2,841)
3. Technology (2,525)
4. Business (1,885)
5. Health & Wellness (1,615)
6. Creative (1,012)
7. Personal Growth & Lifestyle (220)

卫星通信


系统学习卫星通信的系统组成、链路分析、多址技术与典型网络，建立基本系统分析与设计能力。
- XuetangX
- Self-Paced
- Free Online Course
航空通信原理


以“信源—发射—信道—接收—信宿”为主线，系统讲解航空通信中的模拟与数字通信原理，并用交互仿真可视化抽象机理。
- XuetangX
- Self-Paced
- Free Online Course
电路分析基础


以严密理论与实践应用为主线，从基尔霍夫定律贯通直流、动态、正弦稳态、耦合电感及双口网络分析。
- XuetangX
- Self-Paced
- Free Online Course
通信网络基础


以数学分析与运行原理为主线，贯通排队理论、传输交换、多址接入、路由选择及流量拥塞控制。
- XuetangX
- Self-Paced
- Free Online Course
人类与生态文明


从人类的生物与文化适应出发，探讨人与环境的生态关系及生态文明建设。
- XuetangX
- Self-Paced
- Free Online Course
雷达气象学


系统讲解天气雷达的工作原理、回波散射与衰减、降水定量探测及多普勒回波分析。
- XuetangX
- Self-Paced
- Free Online Course
生物化学与分子生物学


从蛋白质、酶和代谢到基因表达与重组技术，系统建立医学相关生物化学与分子生物学基础。
- XuetangX
- Self-Paced
- Free Online Course
基因工程


系统学习基因工程原理、基因克隆与表达技术，并通过实验了解其在工业、农业和医学中的应用。
- XuetangX
- Self-Paced
- Free Online Course
植物的欲望


植物如何通过唤醒人类对甜、美、陶醉和控制的欲望，与人类共同演化并实现自身繁殖。
- XuetangX
- Self-Paced
- Free Online Course
古生物学


以地球历史为主线，系统探索化石、生物演化与生命起源。
- XuetangX
- Self-Paced
- Free Online Course
城市地理学


从城市化进程到城市体系与内部空间结构，分析城市形成、分布及演变规律。
- XuetangX
- Self-Paced
- Free Online Course
3S野外实践教学


3S野外实践教学是地理信息科学专业教学体系的重要组成部分，本门课程有助于学生掌握第一手野外调查数据，进而培养学生发现问题、分析问题、解决问题的能力及创新能力。
- XuetangX
- Self-Paced
- Free Online Course
蓝色地球


从时间与空间尺度认识地球，探索风化、构造运动、地貌演化与地震波等地质过程。
- XuetangX
- Self-Paced
- Free Online Course
Access程序设计基础


以足球世界杯数据库为贯穿案例，学习Access数据库设计、查询、报表及VBA程序开发。
- XuetangX
- Self-Paced
- Free Online Course
计算机辅助绘图——Solid Edge ST

用 Solid Edge ST 完成从草图、零件与钣金建模到装配和工程图生成的三维 CAD 设计。
- XuetangX
- Self-Paced
- Free Online Course

About Class Central

Class Central helps learners find the best courses on almost any subject, wherever they exist.

Built by learners, since 2011.

Facebook
Twitter
LinkedIn
YouTube
Bluesky

Career Certificates

Generative AI
UX Design
Data Science
Finance
DevOps
Project Management
All Subjects

Coursera
Udemy
Noble Desktop
Udacity
CodeSignal
Boot.dev
All Universities

The Report by Class Central RSS Feed

Series Finale of Online Education
Udemy Earns More, Pays Less
Duolingo's 2026 Strategy
1000s of Free Certificates
Best Courses Guides
Best of All Time
Most Popular of All Time

About Us
Careers
Write for The Report
Contact Us

Class Central © 2011-2026 Privacy Policy

Share

Facebook
Twitter
Bluesky
Email

Never Stop Learning.

Get personalized course recommendations, track subjects and courses with reminders, and more.

Sign up for free

Someone learning on their laptop while sitting on the floor.